Welcome to The MIT Department of Physics Technical Services Group website.

About TSGThe Technical Services Group (TSG) at MIT's Department of Physics provides technical and teaching support for undergraduate courses at MIT. Our many rooms of physics demos, accumulated over the past century, display subtle physics concepts ranging from electromagnetism, to kinematics, to optics.

Keyword: Electric FieldsA sealed transparent acrylic container filled with suspended fibers fits on the overhead projector. Five special slides that are able to show different fields fit in the container on the overhead projector. A special piezoelectric pistol with an output of 5 kV is used to charge the slides. The fields that can be shown are:

1. parallel plate capacitator
2. a circle and a point
3. a pattern of two concentric circles that demonstrates electrostatic shielding
4. two like-charge points
5. two unlike-charge points